It means that you retract something you said earlier because it turns out that you were mistaken. For example, if I tell my friend David that he will never pass the physics final, but he ends up doing so, I'd be in a position of having to "eat my words," or admit that I was wrong.
"Idom" is not a word in English, so the difference is between a word and a non-word. An idiom is a phrase that cannot be understood unless you know the idiomatic meaning already. "On edge" is an example of an idiom because you are not literally standing on an edge - you are anxious or frustrated.
The idiom "at the drop of a hat" means to do something immediately or without hesitation, often at a moment's notice or without needing much prompting. It implies a willingness to act quickly or without delay.
You might be thinking of "bury the hatchet." It means to end a quarrel or conflict and become friendly.
it means: when do you eat supper?
The root "nomin" is derived from Latin and means "name" or "known." It is commonly found in English words related to naming or designating something.
anxious
heart of stone
Ben Idom's birth name is Benjamin Carter Idom.
it is an idom and it is having become an object of common mental or refernce
Ben Idom is 5' 11".
Ben Idom goes by Boo.
It means things just went from bad to worse.
Ben Idom was born on April 24, 1984, in Longview, Texas, USA.
Roy Idom died in February 1983, in Caddo County, Louisiana, USA.
Roy Idom was born on September 10, 1907, in Cass County, Texas, USA.
One who stares at something or somebody, stretching the neck to see even farther as a curious person
To have a bee in one's bonnet means that a person is preoccupied or obsessed with an idea or an incident from the past.